<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Application
 * @subpackage Resource
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: ResourceAbstract.php 18951 2009-11-12 16:26:19Z alexander $
 */

/**
 * @see Zend_Application_Resource_Resource
 */
require_once 'Zend/Application/Resource/Resource.php';

/**
 * Abstract class for bootstrap resources
 *
 * @uses       Zend_Application_Resource_Resource
 * @category   Zend
 * @package    Zend_Application
 * @subpackage Resource
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
abstract class Zend_Application_Resource_ResourceAbstract implements Zend_Application_Resource_Resource
{
	/**
	 * Parent bootstrap
	 *
	 * @var Zend_Application_Bootstrap_Bootstrapper
	 */
	protected $_bootstrap;

	/**
	 * Options for the resource
	 *
	 * @var array
	 */
	protected $_options = array();

	/**
	 * Option keys to skip when calling setOptions()
	 *
	 * @var array
	 */
	protected $_skipOptions = array(
        'options',
        'config',
	);

	/**
	 * Create a instance with options
	 *
	 * @param mixed $options
	 */
	public function __construct($options = null)
	{
		if (is_array($options)) {
			$this->setOptions($options);
		} else if ($options instanceof Zend_Config) {
			$this->setOptions($options->toArray());
		}
	}

	/**
	 * Set options from array
	 *
	 * @param  array $options Configuration for resource
	 * @return Zend_Application_Resource_ResourceAbstract
	 */
	public function setOptions(array $options)
	{
		foreach ($options as $key => $value) {
			if (in_array(strtolower($key), $this->_skipOptions)) {
				continue;
			}

			$method = 'set' . strtolower($key);
			if (method_exists($this, $method)) {
				$this->$method($value);
			}
			if ('bootstrap' == $key) {
				unset($options[$key]);
			}
		}

		$this->_options = $this->mergeOptions($this->_options, $options);

		return $this;
	}

	/**
	 * Retrieve resource options
	 *
	 * @return array
	 */
	public function getOptions()
	{
		return $this->_options;
	}

	/**
	 * Merge options recursively
	 *
	 * @param  array $array1
	 * @param  mixed $array2
	 * @return array
	 */
	public function mergeOptions(array $array1, $array2 = null)
	{
		if (is_array($array2)) {
			foreach ($array2 as $key => $val) {
				if (is_array($array2[$key])) {
					$array1[$key] = (array_key_exists($key, $array1) && is_array($array1[$key]))
					? $this->mergeOptions($array1[$key], $array2[$key])
					: $array2[$key];
				} else {
					$array1[$key] = $val;
				}
			}
		}
		return $array1;
	}

	/**
	 * Set the bootstrap to which the resource is attached
	 *
	 * @param  Zend_Application_Bootstrap_Bootstrapper $bootstrap
	 * @return Zend_Application_Resource_Resource
	 */
	public function setBootstrap(Zend_Application_Bootstrap_Bootstrapper $bootstrap)
	{
		$this->_bootstrap = $bootstrap;
		return $this;
	}

	/**
	 * Retrieve the bootstrap to which the resource is attached
	 *
	 * @return null|Zend_Application_Bootstrap_Bootstrapper
	 */
	public function getBootstrap()
	{
		return $this->_bootstrap;
	}
}
